Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
050020goodexcellent41excellent
040020goodexcellent41excellent
030020goodexcellent41excellent
020019goodexcellent31excellent
010018goodexcellent31excellent
000025goodexcellent31excellent
230019goodexcellent31excellent
220018goodexcellent31excellent
210015goodexcellent31excellent
200013goodexcellent21excellent
190010excellentexcellent21excellent
180011excellentexcellent21excellent
170011excellentexcellent21excellent
160012excellentexcellent21excellent
150013goodexcellent21excellent
140013goodexcellent21excellent
130011excellentexcellent21excellent
120022goodexcellent41excellent
110027goodexcellent41excellent
100022goodexcellent31excellent
090029goodexcellent41excellent
080024goodexcellent31excellent
070021goodexcellent31excellent
060019goodexcellent31excellent